H.R. 4994

119th CONGRESS 1st Session

To require the Administrator of the Federal Aviation Administration shall update the regulations to issue regulations to phase out the use of bleed air systems in certain aircraft, and for other purposes.

IN THE HOUSE OF REPRESENTATIVES · August 19, 2025 · Sponsor: Mr. Frost · Committee: Committee on Transportation and Infrastructure

Table of contents

• H.R. 4994
  • SEC. 1. Short title
  • SEC. 2. Regulations on bleed air systems in certain aircraft

SEC. 1. Short title

• This Act may be cited as the Safe Air on Airplanes Act.

SEC. 2. Regulations on bleed air systems in certain aircraft

• (a) Regulations required
  • Not later than 6 months after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall update the regulations under part 25 of title 14, Code of Federal Regulations, and any other applicable regulations, to—
    • prohibit new type certified turbine and turbo-prop aircraft designs from using bleed air systems;
    • require that, beginning on the date that is 7 years after the date of enactment of this Act, any bleed air system in a newly manufactured aircraft is fitted with a filter or combination of filter and air cleaning device designed and demonstrated to remove gaseous and particulate components of oil fumes; and
    • provide for a phase-out of the use of bleed air systems in the manufacture of existing type designs of turbine and turbo-prop driven aircraft according to the following:
      • Not later than 10 years after the date of enactment of this Act, 25 percent of such aircraft shall be manufactured without bleed air systems.
      • Not later than 20 years after the date of enactment of this Act, 50 percent of such aircraft shall be manufactured without bleed air systems.
      • Not later than 30 years after the date of enactment of this Act, 100 percent of such aircraft shall be manufactured without bleed air systems.
• (b) Definition of bleed air system
  • In this Act, the term bleed air system means an air system that—
    • uses compressed air that is taken from an aircraft engine, or auxiliary power unite compressor stage, that is upstream of the combustion chamber or on a shaft driven by a turbine engine; and
    • provides pressurized air to the aircraft pneumatic system that passengers or crew could foreseeably inhale or come in contact with during the operation of the aircraft for applications including ventilation.